Thrashing-machine



(No Mdel.) 2 Sheets-Sheet 1. W. H.-BOWBN. THRASHING MACHINE.

No. 523,423. Pate-ted July 24, 1894.

WITNESSES: YINVENTOR Z $771M BY M ATTORNEY (No Model.) 2 Sheets-Sheet"?W. H. BOWEN. THRASHING MACHINE.

I No. 528,423. Patent ed July 24, 1894.

WITNESSES:

UNITED STATES P TENT Orrrcn.

WILLIAM H. BOWEN, OF WISE, ASSIGNOR TO THE KEYSTONE MANUFAC- TURINGCOMPANY, OF LANSING, MICHIGAN.

THRASHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 523,423, dated July 24,1894. Application filed January 12. 1892. Renewed April 8,1898. Againrenewed January 13,1894- A Serial No.496,8l4- (No model.)

ing drawings, and to the letters and figures of reference markedthereon, which form a part of this specification.

My invention relates to the separation in thrashing machines; its objectbeing to'provide means for a more thorough separation of the grain andstraw.

Figure 1 is a side sectional view of my in vention. Fig. 2 is a frontsectional view on the line X X of Fig. 1. Fig. 3 is a side eleva tion ofthe pitcher's 10 10. Fig. 4 is a top plan view'of one of the separatingdevices.

Fig. 5 is an enlarged front sectional view showing crank on line g g ofFig. 1. Fig. 6 is a bottom perspective of the shakers showing sectionconnections. Fig. 7 is an enlarged perspective of same.

In the drawings A is the frame work of the machine, B the cylinder, andB the concave.

O is the grain carrier. D the elevator, E and E the grain boards orpans, and F the fanning mill.

H is a hood at the top of the frame in the rear of the cylinder againstwhich the straw and wheat are thrown as it leaves the cylinder. Thewheat and straw are deflected by the hood H upon the four straw shakers,which are each divided into two sections 1 and 1, 2 and 2', 3 and 3', 4and 4'. The front section is about one-fifth the length of the rearsections. Upon the upper edge of these shakers I form teeth having arearward slant on their front edges, and an abrupt fall in the rear.Across the front section of each shaker I secure the board 11',1l,slanting backward same as the teeth but extending higher than theteeth. As the straw leaves the cylinder it strikes these boards 11',11and is thrown up against the hood H.

10, 10, 10, are adjustable forked pitchers secured to the straw shakers,particularly the. rear section, and are intended to pick up the strawand throw it along, thus helping in the separation. They are pivoted attheir front end 19, through which a bolt S passes. By loosening the nuton the bolt S the pitchers may be adj usted up or down as required. Fig.4 shows the construction of these shakers, 1, 2, 3, 4, they are of thewidth required, and have a slatted bottom, 15, except the front and rearwhich maybe perforated, as at 16. ,5 and 8 are crank shafts, extendingfrom one side of the machine to the other. Said shafts are provided withtwo series of oppositely, alternately projecting cranks, a, b, o, d, towhich are connected the front ends of the respective sections of theshakers, 1, 2,3, 4. It is obvious that the motion of the front ends willbe circular and reciprocating, and alternate. The two sections 1 and 1are connected by loose straps 20, which are secured to the front sectionand pass through slides 20 on the rear section. These slides are largeenough so there will be no binding between the sections by reason of thedifierent motion in the rear end of the rear section. I divide theshakers into two sections in order that the front of the shakers mayhave more of the circular motion to carry the straw along, rather thanthe oscillating motion. The rear ends of the sections 1 2 3' 4', of theshakers are supported by the swings 13, thus causing an alternateoscillating motionto the rear part of the sections. Straw and graincoming through the cylinder are thrown by its force, assisted by theends 11, against the hood H. It willthen fall upon the shakers 1, 2, 3,4, which willlift it up and push it along. When it reachesthe pitchers10 10 they will pick it up, the forks serving to pull it apart, andthrow it at 0;. each shaker as it rolls up serving to clear its neighborof straw as it recedes. The straw will thus be thoroughly shaken ofgrain. The grain falling upon the perforated and slatted bottoms of theshakers passes through upon the pans E and E, andis swept by the carrier0 into the fanning mill F. p

' Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- and have a segmental slot 0, in therear 1. In a thrashing machine the straw shaky ing device consisting oftwo or more parallel shakers, each in two sections having slatted andperforated bottoms and toothed upper edges, and having two or moreadjustable pitchers 10, provided with forks 10' secured to the upperedges of the shakers, the shakers i being connected to opposite crankssubstantially as described and as and for the purpose set forth.

2. In a grain separating device for a thrashing machine the combinationwith two or more parallel shakers each in two sections loosely united bysliding bars, and having perforated and slatted bottoms and toothedupper edges, and the adjustable forks secured to the upper edges of theshakers of two cranks I having two or more opposite arms to which theshakers are secured,.one crank for the front section and one for therear section and the swing 13, substantially as described and as and forthe purpose set forth.

3. In a thrashing machine, the combination with the cylinder and concaveof the hood H, the series of parallel sectional shakers, de-

scribed, the crank shafts with alternately opposite arms connected tosaid shakers, the adj ustable forks secured to the edges of the shakers,and the swing 13, substantially as described and as and for the purposeset forth. In testimony whereof I afiix my signature in presence of twowitnesses.

WILLIAM H. BOWEN. Witnesses:

F. D. PATTERSON, A. H. SWARTHOUT.

